" Provision of Replacement of Non- standard Conventional type Panel Interlocking with Electronic Interlocking at 9 Stations ( Chariali ( CGF ), Duliajan ( DJG ), Naharkatiya ( NHK ), Namrup ( NAM ), Borhat ( BFD ), Sapekhaiti ( SPK ), Bhojo ( BOJ ), Safrai ( SFR ) & Lakwa ( LXA ) ) in Tinsukia Division of N. F. Railway"